From: Ivan Maidanski Date: Fri, 14 Oct 2016 16:22:08 +0000 (+0300) Subject: Eliminate more 'scope of variable can be reduced' cppcheck style warnings X-Git-Tag: v8.0.0~1110 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=81d04a6b60b511fb5d9016b2335d1e4c3447117f;p=platform%2Fupstream%2Flibgc.git Eliminate more 'scope of variable can be reduced' cppcheck style warnings * allchblk.c [MARK_BIT_PER_GRANULE] (setup_header): Move local variable declarations to the inner scope where the variables are actually used. * alloc.c [!SMALL_CONFIG] (GC_try_to_collect_inner, GC_finish_collection): Likewise. * alloc.c (GC_stopped_mark): Likewise. * backgraph.c [MAKE_BACK_GRAPH] (add_edge): Likewise. * darwin_stop_world.c [GC_DARWIN_THREADS] (GC_push_all_stacks, GC_stop_world, GC_thread_resume): Likewise. * dyn_load.c [USE_PROC_FOR_LIBRARIES] (sort_heap_sects): Likewise. * dyn_load.c [ALPHA && OSF1 || HPUX] (GC_register_dynamic_libraries): Likewise. * dyn_load.c [DARWIN] (GC_dyld_image_add, GC_dyld_image_remove): Likewise. * extra/AmigaOS.c (GC_amiga_free_all_mem, GC_amiga_allocwrapper_any): Likewise. * extra/msvc_dbg.c (GetDescriptionFromAddress): Likewise. * gcj_mlc.c [GC_GCJ_SUPPORT] (GC_core_gcj_malloc, GC_gcj_malloc_ignore_off_page): Likewise. * include/new_gc_alloc.h (single_client_gc_alloc_template::deallocate, single_client_gc_alloc_template::ptr_free_deallocate, single_client_traceable_alloc_template::deallocate, single_client_traceable_alloc_template::ptr_free_deallocate): Likewise. * malloc.c [THREADS] (GC_free_inner): Likewise. * mark_rts.c (GC_add_roots_inner): Likewise. * misc.c (GC_clear_stack): Likewise. * os_dep.c [GWW_VDB] (GC_gww_read_dirty): Likewise. * os_dep.c [MPROTECT_VDB] (GC_protect_heap): Likewise. * os_dep.c [PROC_VDB] (GC_read_dirty): Likewise. * os_dep.c [MPROTECT_VDB && DARWIN] (catch_exception_raise): Likewise. * pthread_stop_world.c [GC_NETBSD_THREADS_WORKAROUND] (GC_start_world): Likewise. * pthread_support.c [!GC_NO_PTHREAD_SIGMASK] (pthread_sigmask): Likewise. * reclaim.c [!SMALL_CONFIG] (GC_reclaim_all): Likewise. * tests/test.c (run_one_test): Likewise. * tests/test.c [MACOS] (SetMinimumStack): Likewise. * thread_local_alloc.c [THREAD_LOCAL_ALLOC] (return_single_freelist): Likewise. * typd_mlc.c (GC_make_descriptor): Likewise. * win32_threads.c (GC_start_world, GC_CreateThread): Likewise. * win32_threads.c [!GC_PTHREADS_PARAMARK] (GC_start_mark_threads_inner): Likewise. * win32_threads.c [!MSWINCE && !CYGWIN32] (GC_beginthreadex): Likewise. --- diff --git a/allchblk.c b/allchblk.c index df9b6b0..16e82b7 100644 --- a/allchblk.c +++ b/allchblk.c @@ -226,9 +226,8 @@ static GC_bool setup_header(hdr * hhdr, struct hblk *block, size_t byte_sz, int kind, unsigned flags) { word descr; -# ifdef MARK_BIT_PER_GRANULE - size_t granules; +# ifdef MARK_BIT_PER_GRANULE if (byte_sz > MAXOBJBYTES) flags |= LARGE_BLOCK; # endif @@ -269,7 +268,9 @@ static GC_bool setup_header(hdr * hhdr, struct hblk *block, size_t byte_sz, hhdr -> hb_inv_sz = inv_sz; } # else /* MARK_BIT_PER_GRANULE */ - granules = BYTES_TO_GRANULES(byte_sz); + { + size_t granules = BYTES_TO_GRANULES(byte_sz); + if (EXPECT(!GC_add_map_entry(granules), FALSE)) { /* Make it look like a valid block. */ hhdr -> hb_sz = HBLKSIZE; @@ -280,6 +281,7 @@ static GC_bool setup_header(hdr * hhdr, struct hblk *block, size_t byte_sz, } hhdr -> hb_map = GC_obj_map[(hhdr -> hb_flags & LARGE_BLOCK) != 0 ? 0 : granules]; + } # endif /* MARK_BIT_PER_GRANULE */ /* Clear mark bits */ diff --git a/alloc.c b/alloc.c index a5dc677..7aa6833 100644 --- a/alloc.c +++ b/alloc.c @@ -436,8 +436,8 @@ GC_INNER GC_bool GC_try_to_collect_inner(GC_stop_func stop_func) { # ifndef SMALL_CONFIG CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ - CLOCK_TYPE current_time; # endif + ASSERT_CANCEL_DISABLED(); GC_ASSERT(I_HOLD_LOCK()); if (GC_dont_gc || (*stop_func)()) return FALSE; @@ -499,6 +499,8 @@ GC_INNER GC_bool GC_try_to_collect_inner(GC_stop_func stop_func) GC_finish_collection(); # ifndef SMALL_CONFIG if (GC_print_stats) { + CLOCK_TYPE current_time; + GET_TIME(current_time); GC_log_printf("Complete collection took %lu msecs\n", MS_TIME_DIFF(current_time,start_time)); @@ -623,7 +625,6 @@ STATIC GC_bool GC_stopped_mark(GC_stop_func stop_func) unsigned i; # ifndef SMALL_CONFIG CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ - CLOCK_TYPE current_time; # endif # if !defined(REDIRECT_MALLOC) && defined(USE_WINALLOC) @@ -734,6 +735,8 @@ STATIC GC_bool GC_stopped_mark(GC_stop_func stop_func) if (GC_PRINT_STATS_FLAG) { unsigned long time_diff; unsigned total_time, divisor; + CLOCK_TYPE current_time; + GET_TIME(current_time); time_diff = MS_TIME_DIFF(current_time,start_time); @@ -896,7 +899,6 @@ STATIC void GC_finish_collection(void) # ifndef SMALL_CONFIG CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ CLOCK_TYPE finalize_time = 0; - CLOCK_TYPE done_time; # endif # if defined(GC_ASSERTIONS) && defined(THREADS) \ @@ -1021,6 +1023,8 @@ STATIC void GC_finish_collection(void) GC_on_collection_event(GC_EVENT_RECLAIM_END); # ifndef SMALL_CONFIG if (GC_print_stats) { + CLOCK_TYPE done_time; + GET_TIME(done_time); # ifndef GC_NO_FINALIZATION /* A convenient place to output finalization statistics. */ diff --git a/backgraph.c b/backgraph.c index 4b087e4..5485091 100644 --- a/backgraph.c +++ b/backgraph.c @@ -227,13 +227,6 @@ static void add_edge(ptr_t p, ptr_t q) ptr_t old_back_ptr = GET_OH_BG_PTR(q); back_edges * be, *be_cont; word i; - static unsigned random_number = 13; -# define GOT_LUCKY_NUMBER (((++random_number) & 0x7f) == 0) - /* A not very random number we use to occasionally allocate a */ - /* back_edges structure even for a single backward edge. This */ - /* prevents us from repeatedly tracing back through very long */ - /* chains, since we will have some place to store height and */ - /* in_progress flags along the way. */ GC_ASSERT(p == GC_base(p) && q == GC_base(q)); if (!GC_HAS_DEBUG_INFO(q) || !GC_HAS_DEBUG_INFO(p)) { @@ -242,6 +235,14 @@ static void add_edge(ptr_t p, ptr_t q) return; } if (0 == old_back_ptr) { + static unsigned random_number = 13; +# define GOT_LUCKY_NUMBER (((++random_number) & 0x7f) == 0) + /* A not very random number we use to occasionally allocate a */ + /* back_edges structure even for a single backward edge. This */ + /* prevents us from repeatedly tracing back through very long */ + /* chains, since we will have some place to store height and */ + /* in_progress flags along the way. */ + SET_OH_BG_PTR(q, p); if (GOT_LUCKY_NUMBER) ensure_struct(q); return; diff --git a/darwin_stop_world.c b/darwin_stop_world.c index 921f6f5..b2f6c65 100644 --- a/darwin_stop_world.c +++ b/darwin_stop_world.c @@ -323,8 +323,7 @@ STATIC ptr_t GC_stack_range_for(ptr_t *phi, thread_act_t thread, GC_thread p, GC_INNER void GC_push_all_stacks(void) { - int i; - ptr_t lo, hi, altstack_lo, altstack_hi; + ptr_t hi, altstack_lo, altstack_hi; task_t my_task = current_task(); mach_port_t my_thread = mach_thread_self(); GC_bool found_me = FALSE; @@ -336,6 +335,7 @@ GC_INNER void GC_push_all_stacks(void) # ifndef DARWIN_DONT_PARSE_STACK if (GC_query_task_threads) { + int i; kern_return_t kern_result; thread_act_array_t act_list = 0; @@ -346,8 +346,9 @@ GC_INNER void GC_push_all_stacks(void) for (i = 0; i < (int)listcount; i++) { thread_act_t thread = act_list[i]; - lo = GC_stack_range_for(&hi, thread, NULL, FALSE, my_thread, - &altstack_lo, &altstack_hi); + ptr_t lo = GC_stack_range_for(&hi, thread, NULL, FALSE, my_thread, + &altstack_lo, &altstack_hi); + if (lo) { GC_ASSERT((word)lo <= (word)hi); total_size += hi - lo; @@ -368,13 +369,19 @@ GC_INNER void GC_push_all_stacks(void) } else # endif /* !DARWIN_DONT_PARSE_STACK */ /* else */ { + int i; + for (i = 0; i < (int)listcount; i++) { GC_thread p; + for (p = GC_threads[i]; p != NULL; p = p->next) if ((p->flags & FINISHED) == 0) { thread_act_t thread = (thread_act_t)p->stop_info.mach_thread; - lo = GC_stack_range_for(&hi, thread, p, (GC_bool)p->thread_blocked, - my_thread, &altstack_lo, &altstack_hi); + ptr_t lo = GC_stack_range_for(&hi, thread, p, + (GC_bool)p->thread_blocked, + my_thread, &altstack_lo, + &altstack_hi); + if (lo) { GC_ASSERT((word)lo <= (word)hi); total_size += hi - lo; @@ -533,7 +540,6 @@ STATIC GC_bool GC_suspend_thread_list(thread_act_array_t act_list, int count, /* Caller holds allocation lock. */ GC_INNER void GC_stop_world(void) { - unsigned i; task_t my_task = current_task(); mach_port_t my_thread = mach_thread_self(); kern_return_t kern_result; @@ -556,6 +562,7 @@ GC_INNER void GC_stop_world(void) if (GC_query_task_threads) { # ifndef GC_NO_THREADS_DISCOVERY + unsigned i; GC_bool changed; thread_act_array_t act_list, prev_list; mach_msg_type_number_t listcount, prevcount; @@ -603,6 +610,8 @@ GC_INNER void GC_stop_world(void) # endif /* !GC_NO_THREADS_DISCOVERY */ } else { + unsigned i; + for (i = 0; i < THREAD_TABLE_SZ; i++) { GC_thread p; @@ -665,7 +674,6 @@ GC_INLINE void GC_thread_resume(thread_act_t thread) GC_INNER void GC_start_world(void) { task_t my_task = current_task(); - int i; # ifdef DEBUG_THREADS GC_log_printf("World starting\n"); # endif @@ -677,6 +685,7 @@ GC_INNER void GC_start_world(void) if (GC_query_task_threads) { # ifndef GC_NO_THREADS_DISCOVERY + int i; int j = GC_mach_threads_count; kern_return_t kern_result; thread_act_array_t act_list; @@ -724,6 +733,7 @@ GC_INNER void GC_start_world(void) # endif /* !GC_NO_THREADS_DISCOVERY */ } else { + int i; mach_port_t my_thread = mach_thread_self(); for (i = 0; i < THREAD_TABLE_SZ; i++) { diff --git a/dyn_load.c b/dyn_load.c index 1f60e9d..be5b14f 100644 --- a/dyn_load.c +++ b/dyn_load.c @@ -281,9 +281,10 @@ static void sort_heap_sects(struct HeapSect *base, size_t number_of_elements) { signed_word n = (signed_word)number_of_elements; signed_word nsorted = 1; - signed_word i; while (nsorted < n) { + signed_word i; + while (nsorted < n && (word)base[nsorted-1].hs_start < (word)base[nsorted].hs_start) ++nsorted; @@ -1051,29 +1052,18 @@ extern int errno; GC_INNER void GC_register_dynamic_libraries(void) { - int status; - ldr_process_t mypid; - - /* module */ - ldr_module_t moduleid = LDR_NULL_MODULE; - ldr_module_info_t moduleinfo; - size_t moduleinfosize = sizeof(moduleinfo); - size_t modulereturnsize; - - /* region */ - ldr_region_t region; - ldr_region_info_t regioninfo; - size_t regioninfosize = sizeof(regioninfo); - size_t regionreturnsize; - - /* Obtain id of this process */ - mypid = ldr_my_process(); + ldr_module_t moduleid = LDR_NULL_MODULE; + ldr_process_t mypid = ldr_my_process(); /* obtain id of this process */ /* For each module */ while (TRUE) { - - /* Get the next (first) module */ - status = ldr_next_module(mypid, &moduleid); + ldr_module_info_t moduleinfo; + size_t modulereturnsize; + ldr_region_t region; + ldr_region_info_t regioninfo; + size_t regionreturnsize; + int status = ldr_next_module(mypid, &moduleid); + /* Get the next (first) module */ /* Any more modules? */ if (moduleid == LDR_NULL_MODULE) @@ -1089,7 +1079,7 @@ GC_INNER void GC_register_dynamic_libraries(void) /* Get the module information */ status = ldr_inq_module(mypid, moduleid, &moduleinfo, - moduleinfosize, &modulereturnsize); + sizeof(moduleinfo), &modulereturnsize); if (status != 0 ) ABORT("ldr_inq_module failed"); @@ -1109,7 +1099,7 @@ GC_INNER void GC_register_dynamic_libraries(void) for (region = 0; region < moduleinfo.lmi_nregion; region++) { /* Get the region information */ status = ldr_inq_region(mypid, moduleid, region, ®ioninfo, - regioninfosize, ®ionreturnsize); + sizeof(regioninfo), ®ionreturnsize); if (status != 0 ) ABORT("ldr_inq_region failed"); @@ -1149,15 +1139,13 @@ extern int sys_nerr; GC_INNER void GC_register_dynamic_libraries(void) { - int status; int index = 1; /* Ordinal position in shared library search list */ - struct shl_descriptor *shl_desc; /* Shared library info, see dl.h */ /* For each dynamic library loaded */ while (TRUE) { - - /* Get info about next shared library */ - status = shl_get(index, &shl_desc); + struct shl_descriptor *shl_desc; /* Shared library info, see dl.h */ + int status = shl_get(index, &shl_desc); + /* Get info about next shared library */ /* Check if this is the end of the list or if some error occurred */ if (status != 0) { @@ -1300,8 +1288,6 @@ STATIC void GC_dyld_image_add(const struct GC_MACH_HEADER *hdr, const struct GC_MACH_SECTION *sec; const char *name; GC_has_static_roots_func callback = GC_has_static_roots; - char secnam[16]; - const char *fmt; DCL_LOCK_STATE; if (GC_no_dls) return; @@ -1333,9 +1319,12 @@ STATIC void GC_dyld_image_add(const struct GC_MACH_HEADER *hdr, /* Sections constructed on demand. */ for (j = 0; j < sizeof(GC_dyld_add_sect_fmts) / sizeof(char *); j++) { - fmt = GC_dyld_add_sect_fmts[j]; + const char *fmt = GC_dyld_add_sect_fmts[j]; + /* Add our manufactured aligned BSS sections. */ for (i = 0; i <= L2_MAX_OFILE_ALIGNMENT; i++) { + char secnam[16]; + (void)snprintf(secnam, sizeof(secnam), fmt, (unsigned)i); secnam[sizeof(secnam) - 1] = '\0'; sec = GC_GETSECTBYNAME(hdr, SEG_DATA, secnam); @@ -1365,8 +1354,6 @@ STATIC void GC_dyld_image_remove(const struct GC_MACH_HEADER *hdr, unsigned long start, end; unsigned i, j; const struct GC_MACH_SECTION *sec; - char secnam[16]; - const char *fmt; for (i = 0; i < sizeof(GC_dyld_sections)/sizeof(GC_dyld_sections[0]); i++) { sec = GC_GETSECTBYNAME(hdr, GC_dyld_sections[i].seg, @@ -1386,8 +1373,11 @@ STATIC void GC_dyld_image_remove(const struct GC_MACH_HEADER *hdr, /* Remove our on-demand sections. */ for (j = 0; j < sizeof(GC_dyld_add_sect_fmts) / sizeof(char *); j++) { - fmt = GC_dyld_add_sect_fmts[j]; + const char *fmt = GC_dyld_add_sect_fmts[j]; + for (i = 0; i <= L2_MAX_OFILE_ALIGNMENT; i++) { + char secnam[16]; + (void)snprintf(secnam, sizeof(secnam), fmt, (unsigned)i); secnam[sizeof(secnam) - 1] = '\0'; sec = GC_GETSECTBYNAME(hdr, SEG_DATA, secnam); diff --git a/extra/AmigaOS.c b/extra/AmigaOS.c index 1e983a1..a1f24a8 100644 --- a/extra/AmigaOS.c +++ b/extra/AmigaOS.c @@ -213,7 +213,6 @@ int ncur151=0; void GC_amiga_free_all_mem(void){ struct GC_Amiga_AllocedMemoryHeader *gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(GC_AMIGAMEM)); - struct GC_Amiga_AllocedMemoryHeader *temp; #ifdef GC_AMIGA_PRINTSTATS printf("\n\n" @@ -244,7 +243,7 @@ void GC_amiga_free_all_mem(void){ #endif while(gc_am!=NULL){ - temp=gc_am->next; + struct GC_Amiga_AllocedMemoryHeader *temp = gc_am->next; FreeMem(gc_am,gc_am->size); gc_am=(struct GC_Amiga_AllocedMemoryHeader *)(~(int)(temp)); } @@ -362,7 +361,7 @@ void *GC_amiga_rec_alloc(size_t size,void *(*AllocFunction)(size_t size2),const void *GC_amiga_allocwrapper_any(size_t size,void *(*AllocFunction)(size_t size2)){ - void *ret,*ret2; + void *ret; GC_amiga_dontalloc=TRUE; // Pretty tough thing to do, but its indeed necessary. latestsize=size; @@ -397,6 +396,7 @@ void *GC_amiga_allocwrapper_any(size_t size,void *(*AllocFunction)(size_t size2) } #ifdef GC_AMIGA_RETRY else{ + void *ret2; /* We got chip-mem. Better try again and again and again etc., we might get fast-mem sooner or later... */ /* Using gctest to check the effectiveness of doing this, does seldom give a very good result. */ /* However, real programs doesn't normally rapidly allocate and deallocate. */ diff --git a/extra/msvc_dbg.c b/extra/msvc_dbg.c index e7d7291..659bb32 100644 --- a/extra/msvc_dbg.c +++ b/extra/msvc_dbg.c @@ -308,7 +308,6 @@ size_t GetDescriptionFromAddress(void* address, const char* format, char*const begin = buffer; char*const end = buffer + size; size_t line_number = 0; - char str[128]; if (size) { *buffer = 0; @@ -317,6 +316,8 @@ size_t GetDescriptionFromAddress(void* address, const char* format, size = (GC_ULONG_PTR)end < (GC_ULONG_PTR)buffer ? 0 : end - buffer; if (line_number) { + char str[128]; + wsprintf(str, "(%d) : ", (int)line_number); if (size) { strncpy(buffer, str, size)[size - 1] = 0; diff --git a/gcj_mlc.c b/gcj_mlc.c index 787a3c5..8b2dad7 100644 --- a/gcj_mlc.c +++ b/gcj_mlc.c @@ -159,12 +159,12 @@ static void maybe_finalize(void) #endif { ptr_t op; - word lg; DCL_LOCK_STATE; GC_DBG_COLLECT_AT_MALLOC(lb); if(SMALL_OBJ(lb)) { - lg = GC_size_map[lb]; + word lg = GC_size_map[lb]; + LOCK(); op = GC_gcjobjfreelist[lg]; if(EXPECT(0 == op, FALSE)) { @@ -232,12 +232,12 @@ GC_API GC_ATTR_MALLOC void * GC_CALL GC_gcj_malloc_ignore_off_page(size_t lb, void * ptr_to_struct_containing_descr) { ptr_t op; - word lg; DCL_LOCK_STATE; GC_DBG_COLLECT_AT_MALLOC(lb); if(SMALL_OBJ(lb)) { - lg = GC_size_map[lb]; + word lg = GC_size_map[lb]; + LOCK(); op = GC_gcjobjfreelist[lg]; if (EXPECT(0 == op, FALSE)) { diff --git a/include/new_gc_alloc.h b/include/new_gc_alloc.h index 8255b11..a857947 100644 --- a/include/new_gc_alloc.h +++ b/include/new_gc_alloc.h @@ -215,13 +215,11 @@ class single_client_gc_alloc_template { } static void deallocate(void *p, size_t n) { - size_t nwords = GC_round_up(n); - void ** flh; - if (n > GC_max_fast_bytes) { GC_free(p); } else { - flh = GC_objfreelist_ptr + nwords; + size_t nwords = GC_round_up(n); + void ** flh = GC_objfreelist_ptr + nwords; GC_obj_link(p) = *flh; memset(reinterpret_cast(p) + GC_bytes_per_word, 0, GC_bytes_per_word * (nwords - 1)); @@ -231,13 +229,11 @@ class single_client_gc_alloc_template { } static void ptr_free_deallocate(void *p, size_t n) { - size_t nwords = GC_round_up(n); - void ** flh; - if (n > GC_max_fast_bytes) { GC_free(p); } else { - flh = GC_aobjfreelist_ptr + nwords; + size_t nwords = GC_round_up(n); + void ** flh = GC_aobjfreelist_ptr + nwords; GC_obj_link(p) = *flh; *flh = p; GC_aux::GC_bytes_recently_freed += nwords * GC_bytes_per_word; @@ -285,13 +281,11 @@ class single_client_traceable_alloc_template { } static void deallocate(void *p, size_t n) { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - if (n > GC_max_fast_bytes) { GC_free(p); } else { - flh = GC_uobjfreelist_ptr + nwords; + size_t nwords = GC_round_up_uncollectable(n); + void ** flh = GC_uobjfreelist_ptr + nwords; GC_obj_link(p) = *flh; *flh = p; GC_aux::GC_uncollectable_bytes_recently_freed += @@ -300,13 +294,11 @@ class single_client_traceable_alloc_template { } static void ptr_free_deallocate(void *p, size_t n) { - size_t nwords = GC_round_up_uncollectable(n); - void ** flh; - if (n > GC_max_fast_bytes) { GC_free(p); } else { - flh = GC_auobjfreelist_ptr + nwords; + size_t nwords = GC_round_up_uncollectable(n); + void ** flh = GC_auobjfreelist_ptr + nwords; GC_obj_link(p) = *flh; *flh = p; GC_aux::GC_uncollectable_bytes_recently_freed += diff --git a/malloc.c b/malloc.c index ab40cf5..75706f4 100644 --- a/malloc.c +++ b/malloc.c @@ -559,7 +559,6 @@ GC_API void GC_CALL GC_free(void * p) hdr *hhdr; size_t sz; /* bytes */ size_t ngranules; /* sz in granules */ - void ** flh; int knd; struct obj_kind * ok; @@ -570,6 +569,8 @@ GC_API void GC_CALL GC_free(void * p) ngranules = BYTES_TO_GRANULES(sz); ok = &GC_obj_kinds[knd]; if (ngranules <= MAXOBJGRANULES) { + void ** flh; + GC_bytes_freed += sz; if (IS_UNCOLLECTABLE(knd)) GC_non_gc_bytes -= sz; if (ok -> ok_init) { diff --git a/mark_rts.c b/mark_rts.c index 055c1dc..b118d86 100644 --- a/mark_rts.c +++ b/mark_rts.c @@ -167,8 +167,6 @@ GC_API void GC_CALL GC_add_roots(void *b, void *e) /* re-registering dynamic libraries. */ void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp) { - struct roots * old; - GC_ASSERT((word)b <= (word)e); b = (ptr_t)(((word)b + (sizeof(word) - 1)) & ~(sizeof(word) - 1)); /* round b up to word boundary */ @@ -185,7 +183,8 @@ void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp) /* takes to scan the roots. */ { register int i; - old = 0; /* initialized to prevent warning. */ + struct roots * old = NULL; /* initialized to prevent warning. */ + for (i = 0; i < n_root_sets; i++) { old = GC_static_roots + i; if ((word)b <= (word)old->r_end @@ -232,13 +231,17 @@ void GC_add_roots_inner(ptr_t b, ptr_t e, GC_bool tmp) } } # else - old = (struct roots *)GC_roots_present(b); - if (old != 0) { - if ((word)e <= (word)old->r_end) /* already there */ return; - /* else extend */ - GC_root_size += e - old -> r_end; - old -> r_end = e; - return; + { + struct roots * old = (struct roots *)GC_roots_present(b); + + if (old != 0) { + if ((word)e <= (word)old->r_end) + return; /* already there */ + /* else extend */ + GC_root_size += e - old -> r_end; + old -> r_end = e; + return; + } } # endif if (n_root_sets == MAX_ROOT_SETS) { diff --git a/misc.c b/misc.c index a540418..e57d000 100644 --- a/misc.c +++ b/misc.c @@ -358,7 +358,6 @@ GC_API void * GC_CALL GC_clear_stack(void *arg) /* Used to occasionally clear a bigger */ /* chunk. */ # endif - ptr_t limit; # define SLOP 400 /* Extra bytes we clear every time. This clears our own */ @@ -377,15 +376,15 @@ GC_API void * GC_CALL GC_clear_stack(void *arg) /* larger ... */ # ifdef THREADS if (++random_no % 13 == 0) { - limit = sp; + ptr_t limit = sp; + MAKE_HOTTER(limit, BIG_CLEAR_SIZE*sizeof(word)); limit = (ptr_t)((word)limit & ~0xf); /* Make it sufficiently aligned for assembly */ /* implementations of GC_clear_stack_inner. */ return GC_clear_stack_inner(arg, limit); - } else { - BZERO((void *)dummy, SMALL_CLEAR_SIZE*sizeof(word)); } + BZERO((void *)dummy, SMALL_CLEAR_SIZE*sizeof(word)); # else if (GC_gc_no > GC_stack_last_cleared) { /* Start things over, so we clear the entire stack again */ @@ -401,16 +400,19 @@ GC_API void * GC_CALL GC_clear_stack(void *arg) GC_high_water = sp; } MAKE_HOTTER(GC_high_water, GC_SLOP); - limit = GC_min_sp; - MAKE_HOTTER(limit, SLOP); - if ((word)sp COOLER_THAN (word)limit) { - limit = (ptr_t)((word)limit & ~0xf); - /* Make it sufficiently aligned for assembly */ - /* implementations of GC_clear_stack_inner. */ - GC_min_sp = sp; - return GC_clear_stack_inner(arg, limit); - } else if (GC_bytes_allocd - GC_bytes_allocd_at_reset - > CLEAR_THRESHOLD) { + { + ptr_t limit = GC_min_sp; + + MAKE_HOTTER(limit, SLOP); + if ((word)sp COOLER_THAN (word)limit) { + limit = (ptr_t)((word)limit & ~0xf); + /* Make it sufficiently aligned for assembly */ + /* implementations of GC_clear_stack_inner. */ + GC_min_sp = sp; + return GC_clear_stack_inner(arg, limit); + } + } + if (GC_bytes_allocd - GC_bytes_allocd_at_reset > CLEAR_THRESHOLD) { /* Restart clearing process, but limit how much clearing we do. */ GC_min_sp = sp; MAKE_HOTTER(GC_min_sp, CLEAR_THRESHOLD/4); diff --git a/os_dep.c b/os_dep.c index e5cbfb2..1394871 100644 --- a/os_dep.c +++ b/os_dep.c @@ -2752,10 +2752,9 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void) GC_ULONG_PTR count; do { - PVOID * pages, * pages_end; + PVOID * pages = gww_buf; DWORD page_size; - pages = gww_buf; count = GC_GWW_BUF_LEN; /* GetWriteWatch is documented as returning non-zero when it */ /* fails, but the documentation doesn't explicitly say why it */ @@ -2795,7 +2794,8 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void) } count = 1; /* Done with this section. */ } else /* succeeded */ { - pages_end = pages + count; + PVOID * pages_end = pages + count; + while (pages != pages_end) { struct hblk * h = (struct hblk *) *pages++; struct hblk * h_end = (struct hblk *) ((char *) h + page_size); @@ -3406,20 +3406,21 @@ GC_API int GC_CALL GC_incremental_protection_needs(void) STATIC void GC_protect_heap(void) { - ptr_t start; - size_t len; - struct hblk * current; - struct hblk * current_start; /* Start of block to be protected. */ - struct hblk * limit; unsigned i; GC_bool protect_all = - (0 != (GC_incremental_protection_needs() & GC_PROTECTS_PTRFREE_HEAP)); + (0 != (GC_incremental_protection_needs() & GC_PROTECTS_PTRFREE_HEAP)); + for (i = 0; i < GC_n_heap_sects; i++) { - start = GC_heap_sects[i].hs_start; - len = GC_heap_sects[i].hs_bytes; + ptr_t start = GC_heap_sects[i].hs_start; + size_t len = GC_heap_sects[i].hs_bytes; + if (protect_all) { PROTECT(start, len); } else { + struct hblk * current; + struct hblk * current_start; /* Start of block to be protected. */ + struct hblk * limit; + GC_ASSERT(PAGE_ALIGNED(len)); GC_ASSERT(PAGE_ALIGNED(start)); current_start = current = (struct hblk *)start; @@ -3570,15 +3571,10 @@ GC_INNER void GC_dirty_init(void) GC_INNER void GC_read_dirty(void) { int nmaps; - unsigned long npages; - unsigned pagesize; - ptr_t vaddr, limit; - struct prasmap * map; - char * bufp; + char * bufp = GC_proc_buf; int i; BZERO(GC_grungy_pages, sizeof(GC_grungy_pages)); - bufp = GC_proc_buf; if (READ(GC_proc_fd, bufp, GC_proc_buf_size) <= 0) { /* Retry with larger buffer. */ word new_size = 2 * GC_proc_buf_size; @@ -3608,10 +3604,12 @@ GC_INNER void GC_read_dirty(void) # endif bufp += sizeof(struct prpageheader); for (i = 0; i < nmaps; i++) { - map = (struct prasmap *)bufp; - vaddr = (ptr_t)(map -> pr_vaddr); - npages = map -> pr_npage; - pagesize = map -> pr_pagesize; + struct prasmap * map = (struct prasmap *)bufp; + ptr_t vaddr = (ptr_t)(map -> pr_vaddr); + unsigned long npages = map -> pr_npage; + unsigned pagesize = map -> pr_pagesize; + ptr_t limit; + # ifdef DEBUG_DIRTY_BITS GC_log_printf( "pr_vaddr= %p, npage= %lu, mflags= 0x%x, pagesize= 0x%x\n", @@ -4215,8 +4213,6 @@ catch_exception_raise(mach_port_t exception_port GC_ATTR_UNUSED, { kern_return_t r; char *addr; - struct hblk *h; - size_t i; thread_state_flavor_t flavor = DARWIN_EXC_STATE; mach_msg_type_number_t exc_state_count = DARWIN_EXC_STATE_COUNT; DARWIN_EXC_STATE_T exc_state; @@ -4285,7 +4281,9 @@ catch_exception_raise(mach_port_t exception_port GC_ATTR_UNUSED, # endif if (GC_mprotect_state == GC_MP_NORMAL) { /* common case */ - h = (struct hblk*)((word)addr & ~(GC_page_size-1)); + struct hblk * h = (struct hblk*)((word)addr & ~(GC_page_size-1)); + size_t i; + UNPROTECT(h, GC_page_size); for (i = 0; i < divHBLKSZ(GC_page_size); i++) { register int index = PHT_HASH(h+i); diff --git a/pthread_stop_world.c b/pthread_stop_world.c index 828a4ed..8b44850 100644 --- a/pthread_stop_world.c +++ b/pthread_stop_world.c @@ -961,9 +961,6 @@ GC_INNER void GC_start_world(void) register int n_live_threads = 0; register int result; # endif -# ifdef GC_NETBSD_THREADS_WORKAROUND - int code; -# endif # ifdef DEBUG_THREADS GC_log_printf("World starting\n"); @@ -1011,6 +1008,8 @@ GC_INNER void GC_start_world(void) } # ifdef GC_NETBSD_THREADS_WORKAROUND for (i = 0; i < n_live_threads; i++) { + int code; + while (0 != (code = sem_wait(&GC_restart_ack_sem))) { if (errno != EINTR) { ABORT_ARG1("sem_wait() for restart handler failed", diff --git a/pthread_support.c b/pthread_support.c index 702fe25..4b773c3 100644 --- a/pthread_support.c +++ b/pthread_support.c @@ -1243,13 +1243,11 @@ GC_INNER void GC_init_parallel(void) GC_API int WRAP_FUNC(pthread_sigmask)(int how, const sigset_t *set, sigset_t *oset) { - sigset_t fudged_set; - int sig_suspend; - INIT_REAL_SYMS(); if (set != NULL && (how == SIG_BLOCK || how == SIG_SETMASK)) { - fudged_set = *set; - sig_suspend = GC_get_suspend_signal(); + sigset_t fudged_set = *set; + int sig_suspend = GC_get_suspend_signal(); + GC_ASSERT(sig_suspend >= 0); if (sigdelset(&fudged_set, sig_suspend) != 0) ABORT("sigdelset failed"); diff --git a/reclaim.c b/reclaim.c index ae7aa4c..e266e8b 100644 --- a/reclaim.c +++ b/reclaim.c @@ -703,7 +703,6 @@ GC_INNER GC_bool GC_reclaim_all(GC_stop_func stop_func, GC_bool ignore_old) struct hblk ** rlh; # ifndef SMALL_CONFIG CLOCK_TYPE start_time = 0; /* initialized to prevent warning. */ - CLOCK_TYPE done_time; if (GC_print_stats == VERBOSE) GET_TIME(start_time); @@ -732,6 +731,8 @@ GC_INNER GC_bool GC_reclaim_all(GC_stop_func stop_func, GC_bool ignore_old) } # ifndef SMALL_CONFIG if (GC_print_stats == VERBOSE) { + CLOCK_TYPE done_time; + GET_TIME(done_time); GC_verbose_log_printf("Disposing of reclaim lists took %lu msecs\n", MS_TIME_DIFF(done_time,start_time)); diff --git a/tests/test.c b/tests/test.c index 46acbf4..d9c8997 100644 --- a/tests/test.c +++ b/tests/test.c @@ -1199,11 +1199,9 @@ void run_one_test(void) # else char *y = (char *)(GC_word)fail_proc1; # endif - CLOCK_TYPE typed_time; # endif CLOCK_TYPE start_time; CLOCK_TYPE reverse_time; - CLOCK_TYPE tree_time; unsigned long time_diff; # ifndef NO_TEST_HANDLE_FORK pid_t pid; @@ -1421,6 +1419,8 @@ void run_one_test(void) # ifndef DBG_HDRS_ALL typed_test(); if (print_stats) { + CLOCK_TYPE typed_time; + GET_TIME(typed_time); time_diff = MS_TIME_DIFF(typed_time, start_time); GC_log_printf("-------------Finished typed_test at time %u (%p)\n", @@ -1429,6 +1429,8 @@ void run_one_test(void) # endif /* DBG_HDRS_ALL */ tree_test(); if (print_stats) { + CLOCK_TYPE tree_time; + GET_TIME(tree_time); time_diff = MS_TIME_DIFF(tree_time, start_time); GC_log_printf("-------------Finished tree_test at time %u (%p)\n", @@ -1650,12 +1652,10 @@ void check_heap_stats(void) #if defined(MACOS) void SetMinimumStack(long minSize) { - long newApplLimit; - if (minSize > LMGetDefltStack()) { - newApplLimit = (long) GetApplLimit() - - (minSize - LMGetDefltStack()); + long newApplLimit = (long) GetApplLimit() + - (minSize - LMGetDefltStack()); SetApplLimit((Ptr) newApplLimit); MaxApplZone(); } diff --git a/thread_local_alloc.c b/thread_local_alloc.c index 951a5df..01e23b4 100644 --- a/thread_local_alloc.c +++ b/thread_local_alloc.c @@ -37,11 +37,11 @@ static GC_bool keys_initialized; static void return_single_freelist(void *fl, void **gfl) { - void *q, **qptr; - if (*gfl == 0) { *gfl = fl; } else { + void *q, **qptr; + GC_ASSERT(GC_size(fl) == GC_size(*gfl)); /* Concatenate: */ qptr = &(obj_link(fl)); diff --git a/typd_mlc.c b/typd_mlc.c index 22ac0f7..47af119 100644 --- a/typd_mlc.c +++ b/typd_mlc.c @@ -517,7 +517,6 @@ GC_API GC_descr GC_CALL GC_make_descriptor(const GC_word * bm, size_t len) { signed_word last_set_bit = len - 1; GC_descr result; - signed_word i; # define HIGH_BIT (((word)1) << (WORDSZ - 1)) DCL_LOCK_STATE; @@ -545,6 +544,8 @@ GC_API GC_descr GC_CALL GC_make_descriptor(const GC_word * bm, size_t len) if (last_set_bit < 0) return(0 /* no pointers */); # if ALIGNMENT == CPP_WORDSZ/8 { + signed_word i; + for (i = 0; i < last_set_bit; i++) { if (!GC_get_bit(bm, i)) { break; @@ -557,6 +558,8 @@ GC_API GC_descr GC_CALL GC_make_descriptor(const GC_word * bm, size_t len) } # endif if ((word)last_set_bit < BITMAP_BITS) { + signed_word i; + /* Hopefully the common case. */ /* Build bitmap descriptor (with bits reversed) */ result = HIGH_BIT; diff --git a/win32_threads.c b/win32_threads.c index 22fd581..afd33c2 100644 --- a/win32_threads.c +++ b/win32_threads.c @@ -1277,11 +1277,12 @@ GC_INNER void GC_start_world(void) # ifdef GC_ASSERTIONS DWORD thread_id = GetCurrentThreadId(); # endif - int i; GC_ASSERT(I_HOLD_LOCK()); if (GC_win32_dll_threads) { LONG my_max = GC_get_max_thread_index(); + int i; + for (i = 0; i <= my_max; i++) { GC_thread t = (GC_thread)(dll_thread_table + i); if (t -> suspended) { @@ -1942,13 +1943,6 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, GC_INNER void GC_start_mark_threads_inner(void) { int i; -# ifdef MSWINCE - HANDLE handle; - DWORD thread_id; -# else - GC_uintptr_t handle; - unsigned thread_id; -# endif GC_ASSERT(I_DONT_HOLD_LOCK()); if (available_markers_m1 <= 0) return; @@ -1965,8 +1959,11 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, } for (i = 0; i < GC_markers_m1; ++i) { - marker_last_stack_min[i] = ADDR_LIMIT; # ifdef MSWINCE + HANDLE handle; + DWORD thread_id; + + marker_last_stack_min[i] = ADDR_LIMIT; /* There is no _beginthreadex() in WinCE. */ handle = CreateThread(NULL /* lpsa */, MARK_THREAD_STACK_SIZE /* ignored */, @@ -1982,6 +1979,10 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, CloseHandle(handle); } # else + GC_uintptr_t handle; + unsigned thread_id; + + marker_last_stack_min[i] = ADDR_LIMIT; handle = _beginthreadex(NULL /* security_attr */, MARK_THREAD_STACK_SIZE, GC_mark_thread, (void *)(word)i, 0 /* flags */, &thread_id); @@ -2197,7 +2198,6 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, LPDWORD lpThreadId) { HANDLE thread_h; - thread_args *args; if (!EXPECT(parallel_initialized, TRUE)) GC_init_parallel(); @@ -2212,8 +2212,9 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, return CreateThread(lpThreadAttributes, dwStackSize, lpStartAddress, lpParameter, dwCreationFlags, lpThreadId); } else { - args = GC_malloc_uncollectable(sizeof(thread_args)); + thread_args *args = GC_malloc_uncollectable(sizeof(thread_args)); /* Handed off to and deallocated by child thread. */ + if (0 == args) { SetLastError(ERROR_NOT_ENOUGH_MEMORY); return NULL; @@ -2247,9 +2248,6 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, void *arglist, unsigned initflag, unsigned *thrdaddr) { - GC_uintptr_t thread_h; - thread_args *args; - if (!EXPECT(parallel_initialized, TRUE)) GC_init_parallel(); /* make sure GC is initialized (i.e. main thread is */ @@ -2263,8 +2261,10 @@ GC_INNER void GC_get_next_stack(char *start, char *limit, return _beginthreadex(security, stack_size, start_address, arglist, initflag, thrdaddr); } else { - args = GC_malloc_uncollectable(sizeof(thread_args)); + GC_uintptr_t thread_h; + thread_args *args = GC_malloc_uncollectable(sizeof(thread_args)); /* Handed off to and deallocated by child thread. */ + if (0 == args) { /* MSDN docs say _beginthreadex() returns 0 on error and sets */ /* errno to either EAGAIN (too many threads) or EINVAL (the */